This edition includes four articles. First, we'll hear about How to Blow Up A Star...and how some new models have recently succeeded in reproducing the two main types of supernovae. We'll also hear about viral nanoelectronics: viruses that coat themselves in selected substances and can self-assemble into nano-wires and other devices.Also we'll hear about: Regulatory T-cells...the peacekeepers of the immune systems. Finally, we'll take a look at how strangling heat and gases from the earth and sea caused several mass extinctions�and whether the same conditions could build again.
©2006 Scientific American